blomquist



Mar. 20,- 1923, f l 4,448,721

if" 'n fY-- fw s l n o ff N a "I" x T s? l Q l c, "QC- Q O \Av Y m E i TM Q Y yyawi A. E R. BLoMQuls'r ,'METAL WORKING MACHINERY 413 sheets-sheet 2' 511e@ oen. 2a, 191s Y .'7 Mal. 20, 1911.3.V y i 1,448,721

` u A. E. R. BLOMQUIST METAL WORKING MACHINERY Filed oct. 2s, 1918 13 sheets-sheet 3 A. E. R. BLOMQUIST METAL WORKI-NG MACHINERY IHed Oct Nl l l5 sheets-sheet 5 A. E. R. BLOMQUIST METAL WORMNG MACHINERY Mar. 20, 1923 Mmm, 1.923. 1,448,721 A, E. R. ELOMQUIST METAL .YOBKXNG MACHNERY Filed Out. 28, 191? 15 sheets-sham,

1 LWN W y i 555 j qywfz; MV @WMM/ 1,448,721 A. E. R. BLOMQUIST METAL WORKING MACHINERY Filed Oct. 28, 1918 l Smeets-sheen if Mar. 20, 1923.

www. ww N wwnhcdfhy www M, y

Mar; 20, 1923.

A. E. R. BLOMQUIST METAL WORKNG MACHINERY M Shi' SHOCK n LKMSZ Mar. 20, 1923.

A. E. R. BLOMQL'HST METAL WORKING MACHINERY A. E. R. BLOMQUEST METAL WORKING MACHINERY Film om. 2a, 1918 Mal'. 20, 1923. 1,448,721

A. E. R. BLOMQUIST METAL WORKIG MAHINERY Filed 0G13. 28, 1918 13 sheejs-shfxet Il.

Mar. 20, 1923'. 1,448,721

A. E. R. BLoMQUls'r METAL WGRKlNG MACHINERY File@ Oct. 2B, 1918 13 sheets-sheet 12 1,448,721 Mar' 2O m23' A. E. R. BLoMQuxsT METAL WGRK I NG MACHINERY Filed Oct. 28, 1918 l5 Sheets-Sheet l@ Patented Mar. 20, 1923.

.UNITED STATES PATENT OFFICE..

AUGUST E. R. BLOMQUIST, 0F CLEVELAND, OHIO, ASSIGNOR T0 THE BLOMQIS'TECK MACHINE COMPANY, OF CLEVELAND, OHIO, A CORPORATION 0F ORIG.

METAL-WORKING MACHINERY.

Applcation tiled October 28, 1918.

To all who/n it may Hmmm.'

Ihr it known that 1, AUGUST F. R. Buur Qi lsT. a riti/,en of tho limited States. residing :it Cleveland, in thil monty of Ueiyahogfn and Stato of (lhio. have invented a rvrtain new :1nd useful linprovmnont in :\lotal\.\orking Marhinery. of which the following is afull, rloar. and exact doscription. reference being had to the :it-vorm panying drawings.

This invention rlatos to metal workingr maifhinery and especially to that riass of machines known as boring and milling.r niai-hinas. The ohjoots of thv` invontion are tho provision ot' a machine ot' this character which shall ho rapahle of pvrforniing a great variety of work. and at a ,great `arivty of spve-ds: the provision of interlocking de" vivos throughout the ditfrrent parts ol' the mai-hino so as to minimize tlnJ ,possibility of connai-ting the di'eront parts thoreof in opposing relation whereby injury might orriir vit/hor to thr lnarliine or to its oporator: tho provision of non' and improved moans to:- rvgulatingithv spood of all the various parts of the marhine and for rstoriug snrh parts to thvir original position after oath nuttin;- oxru'csion; the prmision ol" a ronsl'ruwiion ol'I n'iarhino whii-h shall possoss' fi-oai strrngth and rigidity and lal rapaluh of moro :n'ln'ato work than prior nnnhinvs whiliA at the sarno timo havingi its opio-ating parts so locatod as to lio vasil'r installod in this iirst inataino :ind readily inspm'lvd and oporatod at all times: 'llxrthor and more dv- `lailwl oliiw-ts o' tho said intention will lah vom@ npparent the description prol'ueds.

ln the drawings accompanying and torniing a part of this applivation l havn illus tratvd ono embodiment of my invention. although it will ha understoml that this drawing is illustrative only'and does not limit mo to the constructions and arming?- Inenls tlnrvin Shown n'liif'h may he Varied very widely`without dupal'limhr from my' invontivo` idea. In theav drawings Fig' l rvpresents a front elevation ol' thex complete mae'hine; Fig'. is atop plan view of theY sunu: Fig". 3 represents a. brad end elevation of the machine shown in Fig. 1; Fig. t is a longitudinal sootiouul View of tho machine hody corrospomling; to thv lino tw-4 of' Fig. 5: Fig. l) is a hottom plan View ot the machine holly; Fin'. U is a horizontal sectional vew| taken im serial No. 259,970.

mediatoly beneath thI fraai' cover and showW mg the qntire vspoedrhangingS fvmflafontrolling, and direction reversing mechanism; Figs. 7, 8. 9 and 1l) are a series of relatori vivws rorrrsponding rvsportirrly lo the similari),V mllnliorvd lines in Fig. o and showing' thil slaed-rhanging niinila-rf: in do tailed manubri; Fig. il is :i Swtiona] vie-n corresponding` to thi.l lim` liY ll of Figs. *2. 6, 7, 8, 5l and 1li: Fig. 1;! is an onlargoil detail View ot the feed-controlling merhav nism shown at thcJ lowor righhhand sido of Fig. ti; Fig. 2* is a i'vrlis'al sortimial viv rorrnsponding to thv lino 1i-l9 of Fig. f3 and showing the dirertion rm'oising mechanism; Fig. ll a top pian fir-w of the umVV Chine @over showing: tlm fooilif nt.rolling llevers and also illustratin; r thir relation to the gearing shown in Figs. l2 and 13; Fig. l5 is :t sido olor-ation and `Fig. i6 an end elevation of tho interlrwliing-rylinder whereby the` opratimi of the feed lnvrha'- nism is safeguarded: Fig. i? represents a development of the rylinder sin-faro; Figs. 1S. if) and 20 are sectional views rorresponih ing to the similarly nnnilwred linesV of Figs. G. 12, and 14; Fig. 21., is a detail rivw vor responding to th line 21--2l of Figs. 1. l. lil and i4; Fig. 22 is a sea-tional View correL sponding 'to the' lini` @Q -ffii ot Figs. 12 and 14: Fig. 23 is a perspective view of parts ot' thi,l two reversing' levers showing the intorl lurking expodirnt: Fig. 24- is a Vdetail View aforrosponding to the lino l-i--i of Fig. :15; Fig. Q5 is a detail crosssevtinnal View upon the lim` :l5-Q5 ot' Figs. 1, and hiFig. 26 is a sectional View corresponding to thc line :2G-26 of Figs. 1 and 2: Fig. 27 Ls a top plan View of the hivers shown in Fig. 25 showing! their intorlking'; Fig. 28 is a cross-Sectional new corresponding to the line iBS-28 in Figs. l, 2 and 4; and Fig. 29 is a sectional View on the line 25)-29 of Figs. Q and 28.

Describing by reference rharaotors the parts shown in the present` drawings the machine onipl'ises a main frame or body A. a Column B, a movable head or tool carriage, (l carried by said column. and a movable table or Work-carriage D carried by the main frame. sometimes together with a4 tail rest E also carried hy the main frame.

Machine bool/y.

'The main frame A comprises a pair of est) li t) upright nini# i nini tunning; limsi wi tu vini thv niniiine' nini i vhii'ignli-l huil; hmingf :i siihrlinni: E hfiii winni nlp. interim i' thv linie wi' thin` hun@ is luwte-it thi' npintht wriiiiniii il. thv 'ifmiwnl i' thv gmini: 'iai-ing pi'it'viniilji' strnslinn nhii'h nlm infinie inviti T mi i-ffilnnin l tiem- Fig nl' thv heult' un shown in Vig. 2t# su :ii-i tu lisvhnigv whip nih nini thiA liiniwhilf zihan alm'iling innteiizillf; invit-anvil nti'vnijth tu thv str'ln'tnl'v. l haw shnwn thu huttcim mit' thv wily :inl sin'lnnnelml. h v :l im@I flifinit 1*. "hil'h hibritvi'zninnifs shnlt u? thc hnttni all J whii'h thtnlly ilmstitnteb nn ',iiii hninjing portion hilt thiA in a invii) finittii' if Llvhigu Thi- :wilhelm B Qnnstins uit :i .hull-:iw punt inning npnn its t'inwni'il fznv thta vri'tiv'ui ninth :1y inrinml hy thi pzu'nih'l mils Lint?) :1p-nn which if: nniuntml thtl mui wiring@ iii cmi'ii'ig tin` fipiruting head. l?, 'thin mi@ Ting@ in moved stung time milsr ib inniiin nl :i vertical www lh zirsb'iti-i by the Chain if, hich passt-5 m'ei pulleys 1li! unil ilepcnih iiwiilif the i-olllnin B when' it is nltnchm tu it vninileiv-fiight (not, nhnwn). The uninternvighl siii-ws tu vnuntirhnhinci thil carriage anti i'enim'c its wnight from thu sui-ew S0 that thc` carriage can lue readily moved.

The work i'iii'iiz-igru or tuliln cmnpx'isv` n tranne .21 having ways, QiZ renting upon thc rails: 4v-Jr nini itwlt' i-iuiying :i puit' of pal'ullvl mils 22h-:22S piipvnilii-nhil' tn Said way-:s nnil reci'iving thv mhh-tup 24 whim' zipper fait@ is #intimi nl` npm'tluiil in any niiitnhhf minimi-i' t'ur thil refvption of lmlt 4 nt' thv fastening; ilmiien m cflimlps fin' hnlelA ilr thu wnil'. (ni'iiiil by uni unil 0i' thi* mhh J4 is :i lnmlwt 25 in whiih is jonrniileil thi1 tl'zlnsvulnv Svi-ew iti which piojevts hm'imnitnlly :www tin mils -t-4 and between thv ways 2:5 Q2 hmi is threaded upon thi l svi-viv n mit .T which is jnurmtleil in u sltevc 2h rigid with the frame 2l. zu'x'ivci hy thiJ nun-him hml'y hvtweun the xniln` -l4 unil pninlhl thil'fatn in' n sinttoil shaft 2U upon which is sleiwil tht worin il() whilst thioznl nihsher; with nur tenth 2&1 lni-nwil on thix ux tuiirn' nt' the sluwe L2". Slifhihly spiinml un thv shaft 29 in n i'lntih Spool 32 upnintvil hy n vhlti'h leu-w 233 czii'i'iml by the liainv 2l .zii-nl having tenth :it min nnii nihiptml te welsh with niniilm' teeth czu'iivi hy the win-ni liti. Thin ifi'wts n iinss t'i'mlin;r nf the wurh tzihli. (litri-iwi h y thv nnu'hini lmiljf im titel-"1n thv i'nilnl fl-W4 in iiisi n horizontal #www nnsliing with n niii :.ili'liwi ha' this tninv El su as in @tlect longitudinal innwsnnm (it thil rni'iinge. Thr inni-him hndy also pivtvz'nhlv rnli'ivs ai thiril shaft j' luv-rtm1 lie-tnvin thi mils -t wt :unl gvnlml if thi' slirv t* QPF figrs. ti #intl 122) thin hatt lit-nig i'fn thu pni'pnsn nf npiirnting :i 1wiirnhii www (mit Lshawn) lui-Mul within :i tnil stmk lil nel fnlnptell tu f'neipei'nte with ihn liyst @www in iiituin kinds nt' work .i'liiivin it is, iwnnmm'y to Snppm't nml VnisvV thv tmil. This. huwvwi'. is

mth vini# nl mit nnpintiuit in the present invention Spaan' ffm ity/r metffiansm.

Junrnzihil insiilv the Cavity are n phiraility nf pariiilvl hm'iziintnl shafts 4t). 41,

412i, und 44. Ut' thvv the shaft ttl prnjegts ont through the wall wlwi'e it supports a. t'rtily running drive pulley 45 hawin;r a viutth extension (3 with whii'h u0- npeiiitvis n. cinnpnninn Clutch nwmbex' 47 vplinifsl npmi thv shaft and operated in any :Quitahln muilnvi ais by means of the ljocker 41S n'pvi'ated hy the lever 49 through the link Till. At tht` inner vnd (if the Shaft there in carried thi. sprocket or pulley 5l with whiih cooperates zi belt or' silent chain 52 for the quick return movement. Intermediate of the ends of tha shaft; there are proA fiditl the Sliding gearss 52s, 52"; 52 adapted to mesh selectively with companion pears 53, 52S. 53C rigidly carried by the sha t 41. Slidably splined upon the shaft 42 are a pair onf ears 54 and 54, adapted to engage selectively either with the gear 53" already. mentioned or another gear 53d carried upon theshaft 41. It will be seen that by slidingr these gears into different combinations six different speeds can be, secured, and further combinations can be added if desired. rhe end of the shaft 42 carries a spur gear 54 and also a bevel pinion 54". the former meshing with a spur pinion 55 keyed to the shaft 43, and the latter meshing with a bevel pinion 91 whose purpose will be hereafter explained. v

Slidably splined to the shaft 43 are pair of gears 55", 55, `the latter having at one side. the clutch teeth 55". Loosely journaled upon the shaft 43 is a sleeve 55 formed at one end with clutch teeth adapted to engage with the teeth 55d, and also carrying a rigid spur gear 55S. Slidably splined upon the exterior of the sleeve 55 are a pair of gears 55'* and 55 whose common hub is formed at one side with clutch 'teeth 551; and loosely sleeved upon the shaft 43 at the end of the sleeve 55D is a gear wheel 55k having;` its hub formed with clutch teeth 55 adapted to mesh with the teeth 551. v

Ri idly keyed to the shaft 44 (see Figs. ani 13.) are the gears 56, 56", and 56C, the first two thereof being adapted to mesn selectively with'the gears 55" or 55, and the last named being continuously in mesh with the. gear 55S. Also journaled upon the shaft 44 is a. sleeve 56d formed with gears 55", 5 6t and 56S, the first two of these gears being adapted to mesh selectively with the rroars 55 or 55, and the last named gear 56g being continuously in mesh with the geai 55k. The sleeve 5G projects beyond the end of the shaft 44 and is rigidly attached to the clutch member 5G here shown as journaled upon a final drive shaft 57 in line therewith. Slidably splined upon the shaft 5T is a clutch spool 58 having at one end the clutch teeth 58 adapted to mesh with the clutch member 5G" and having at its op oitc end the cone clutch member 58". olatably journaled upon the shaft 5T is a deeve 59 havin at one end the sprocket 59 weeping the filt or chain 52 heretofore mentioned` and having' at the other end a clutch member 51)" adapted to he engaged by the cone clutchV 5H". Y

Bj means of suitable runnu'tions to he hereafter explained the tool which is carried by the head l? is operated'tlu'ough the gear 91, while the parts from 55 to 58 inclusive constitute means for feeding the tool'and work at any one of a large fnumber of different speeds relatively to the tool speed. The parts 52 and 59 constitute a means whereby the feeding mechanism, to whatever part of the machine it may happen to be joined,can be restored to its starting point at a singlehigh speed after each cutting excursion. The operation of the parts -54 inclusive will be clear without further description, while the operation of the parts -57 is as follows The gear 55" or 55 being in mesh with one of the gears 56' 1r 56", the shaft 44 is rotated car ing with it the pinion 56c and gear 55s which rotates the sleeve 55. The gear '55 or 5.5L upon this sleeve being meshed .withvone of the gears 56 or 56t carried by the sleeve 56", the latter will be rotated and with it the clutch member 56"; the ar 55k meanwhile revolves freely on the s aft 43, Or the gears 55" and 55i may be left out of thejmesh and slid to'the right so as to clutch with gear 55k which thereby operates the shaft 56" by way of the gear 56S. 0r the gears 56* andv 56" may be left idle, the clutch teeth 55d being meshed with the teeth 55' so as to drive the sleeve 55 directly, and the latter can as before be connected to the sleeve 56" either by the gears 55 or 55* or the clutch teeth 55l in cooperation with the gears 55k and 565. Thus va, large number of different speeds may be secured relatively tothe speed of .tool operation, though it is clear'that this number can be extended if desired. particular design and management of the gearing can also be varied, though it will be seenl that the arrangement described collects the gearing into particularly small compass, and'that all the changes provided for are secured merely by shifting` two sleeves longitudinally of'fthe shaft 43. It will also be seen that the effect of all such combinations is vto drive. the clutch 56 in a single direc- `tion, which is opposite to the direction of drive of the sleeve 59. Therefore if the clutch` spool 58' be shifted to the left Vthe shaft 57-will be positively driven in one direction at a'spced dependent upon the gear selection, while if it be moved to the The IUE:

' rig`t,`the engagement o f the friction clutch y wil 'rotate the shaft 5T in the opposite direction 4at one constant speed which is never less than and .may be far greater than the speed of the clutch 56".

The cavit 5 in which these parts are contained is cosed by a removable cover 60 having on its lower face a plurality of longitudihal guideways in which are mounted the slides` 52', 54"', 55' and 55e. The slide 52m is located adjacent the shaft 40 (see Fig.r11) and is provided with a depending fork 52" which embraces the sides of the gear 52". Pivoted to the top of the cover l60 is a shifting lever 52 having secured to its pivotv inside the gear box a forked arm 52 operatively engaging the-slide 52. An impositiv'e lock such as aspring pressed ball the usual manner or rounded hutton 52T may, if desired. he employed to assist in bringing this lever to and holding it iu its different meshing positions. Depending troni the slide 54m`is a forli 5l" engaging the piniil-ll 54, and pivoted upon the top of the over ,titl ie a shiftingrt lever .34 whose pivot i5 eonnec-ted with thi:` slide hy means of a forked erin 54".

By adjuetillgr these two leverl there are obtained all the speed changes of which the tool is capable. Varried hy the ruck 55 is a dependingr fori: 5.3 which engages the Aear ."iz'l. and elw :i ruck llleehintr with a pinion 5.3" carried hy a `sllat't 55" operated h v a handle 55 loi-:ded at the front of the lllarllilnf. yl`he slide h5 carriea, fork 5o' engaging the ,gear 55" and also a rack llleshino ith :l pinion .35 carried h v the sleeve .35 which `\lll'roull|l\ the shaft 55" and. is provided at thel` front of the machine with an operating handle 52T. By the manipulation ot' these two llandlesisand, all the speed changes provided for` the feed lllechllllisln van Areadily he eierteil ae will be obvious. These handles amro preferably pro-- vided with index hnhs. titl, (il hearing indiretions which cooperate with eachother and with other indications carried. bythe ina-4 rhine bodyY which aseiet in the ygear Selectioll desired, .l

Feed contre/Ning hiffofumism'.

Sleeved upon the endl of the. shaft 57 is n pinion 132, havin@r friction tages engaged hy friction driving ineallllsr;carried hy the yBoth said nliterl gearsrinesh .with a. third nliter V14" wherelly revei'eah iSj effected in ',lo the huh ol the goal' (34 there is attached another nliter gear (34* turing in the opposite, direction. .,Journaled ill the machine body in a horizontal punition perpendicular to tllc'shaft (34 is a shaft 65 upon which is loosely sleeved the ruiter gear o5 which lneehee` with thegear 64! and has upon itel forward 'fare the clutch teeth 65h adapted to mieli with companion teeth formed on the clutch pool (35c which is slidahly splilled upon the shaft G5. Rigidly se cured to the inner end of the shaft 65 is a lniter gear tfl'i which meshes with a gear 33T ariied h v the .shaft CBT and aleowvith a nliter gear lo ral'l'ied hv the srren' li herototore mentioned, horlllcd uponutllefhuh of the gear (35 is a spill gear i553?, v

Joinrnaled in the luaMt-hlne` body parallel to the sha-ff 65 le a lay ellaft 6h' having keyed thereon the spill' gear GG meshing with the gear (35 and havin; r its hub formed with a nliter gear GG Slidallly splined upon the shaft (SG is a clutch spool Go" adapted to engage the hull ol: a miler gear 6 6 looe-el) sleeved upon this shaft and whose purpoee will he explained hereafter. The end of the shaft 25) projects near the Shaft (5G and has journaled thereon a miter rear 21) meshing with the gear 66" and having?r iteV hull tol-ined with clutch teeth 29" adapted lo he engaged h v similar teeth carried h v the clutch :spool 29" which is Slidahly splined llpoll theV shaft 29. The hull of the gear 29 is also fornled with spur teeth 29d. The shaft 35 is jonrnaled parallel to and elosely lieside the shaft 29 and han sleeved thereon :l spur rear 3:3;L lneShing with the real- 229% ,vlllle ite` forward face is formed with olntch teeth 35" adapted to he engaged h r similar teeth carried hy the clutch spool 3.3"' slidalll) splinod upon the screw .shaft 1t will be thus .seen that the clutch spools 29 and 35 lie oloeely adjacent to cach other. Also rigidly see-tired to the screw shaft 35 is a ruiter geal- 351. Journaled in the vfront ot' the nlachine is a horizontal Stud shaft 67 adjacent to the Shaft G5 and having on its inner end a nliter gear (57 meshing` with tho gear 35".

-lfhe gear train (S4-35 last described conetitutes the feedoperating mechanism for the entire machine These gears are located ill the cavity 7 immediately in front of the upright B where they cnn easily he installed, inspected, and operated, and are covered by a top plate GS which Carries the means for shifting7A and interlocking,lr these various nlelllbers and alSo oai-ries the vcr4 tionl shaft (it) to which is attached the nliter gear 69" meshing with the miter 66d. This entire feed-mechanism is driven troni the (34 whose direction ot' rotation coiltrolled. Ilot only hy the position of the hltcll spool :3H hut also that of the cluteh spool 64"; and the, gear trains 65, 6G, 29". and 3o'l rotate continuously with the gear 64. The shaft 65 operates the screw l, and can iteelt be operated either hy a handle mounted at the front of the machine for manual adjue-tlnent` the clutch 65 being meanwhile disconnecteil, or it can be operated mechanically h v moving the clutch 65C into engagement with the teeth G5". The shaft 69 advances and retracty the tool spindle will hereafter he explained and can be connected or disconnected from the operating mechanism by movingr the clutch spooi 66. The shaft 29 operates the hlblorrosS-feed as heretofore explained. and the laine can he connected to or disconnected froln the power feeding inechanien'l hy menne4 ot the clutch Spool Ztl (in addition to thichltch arrangement 32).

The screw Shaft i527 can he operated by means the clutch spool 35 i5 disengaged. or can lie operated from the power .source upon the cnfragement of that clutch spool.

t is desirable that means bc provided which shall prevent any movement of the clutch spool 64 excepting when `the clutch spool 58 is either in neutral or in slew speed position; it is also desirable to prevent the engagement of more than one of the fofur clutch spools (55C. 60; 29, or 35C at any one time. l`or it will be seen that the clutch (5.3' operates the vertical spindle feed, clutch tt'i the longitudinal feed` clutch 29 the table eros feed, and clutch 35 the table longitudinal feed, and that. if any two of these uic operate-il' simultaneously it will lead to the-s )oiling of the work or the great injury of t e machine or both." A rdingglv I have provided means for inter ockin;r all these various parts, which means, together with the means for operating these various clutches, will next be described.

l nterlocking mechanism.

('arried by the cover 68 are five levers 71, 72,73, 74, 75. The lever 7l has a depending stud 71 journaled in the.topplate and carrying-at its lower end a horizontal arm 7l" terminating in a rollet` 71e engaging the' clutch spool 58 (see Figs. l4 and 21). The lever 72 is pivoted u on a stud 72* located on top of the cver p ate and has a laterally projecting portion 72? formed with a depending nger 72c which projects throu h a slot in the cover' plate into contact with t e f clutxrlrs otllitlh` The handle of-ithe lever 71. close v overlies thev extension '72".and is formed at that point witha lateral enlargement 71'* having in its lower face a. U-shaped recess comprising the c hannels .-71, 71', oonnected .by the jspace 'I1, allladapted to receive thestullQ carriedwbyfthel extension A 72; Theseplrtsar a'r'l'jl insuch'wisle that wheitlieeluufh teachers farein'eagage; ment the stud 72l will lie inthe space 71? thus '|iermittin'g' the free movement. of' the lever 72 and consequently o f th'e clutch spooll; hut upon thcmovement'. of the lever 71 so as to enga the reversin clutch 58", the lever 72 wi l be locked in t 'e position which it alreadyv occupies, thus'rendering it imiossihle to reverse the feed mechanism dui-' ing thetime tluit tlic` same is under thecon-A trol of the high speed 4ijcturii'i'n" helt52.

The' lleft-.rim has a deperltling stud 73* jourualrd in tjie over ('ainnd provided at itsV lowcrend with the horizontal urui .73" riirs'yiug'the finver Til' which engages the. frnovc of 'the r utcli spool 65, (src 'Figs'. Il aud"0). 'Ihc lever 74 has the dependiugtud 74* similarly journaled in the cover 'GX und provided at its lower end with th'e :irui 7l" from which' depends the linger 74e ivliii-lrt-iigngcs the clutch spool lili". (ser |"i' I4 und' lfll The lrvt'r T5 lizis thi' drpentlin stud T5* provided at its lower und with tie .voke 75 from whose extremities depend thc lingers T5" and 75" which separately engage the clutch member 29C and 35 respectively.

rl`he free end of the levers TIL 74, 7.-'. are also provided with the depending lingers 73'", 74"', 75"'. respetively` which project through siiitahle slots in the cover and are received in the grooves. 73", 74",- 75", of a cylinder 7G journaled in :i horizontal position beneath this coici. One end of this cylinder carries a bevel gear 76 meshing with a companion gear 77 journaled to the front platc ol' the marhine and connected to the index handle TH by means of which said cylinder can he turned. The various grooves 73", T4"1 75", are formed `at oints out of alignment with ear-h other wit i latcrul hrunches or notches ffl", 74, T5 and 75" so that the respective lcicrs can be shifted into engaging: position only when the corresponding notch is brought into register with t e depending linger. '[lie fact that these notches come into register singly prevents the operation of more than one lever at a time, while the lever to be operated is selected by the movement of the index handle 78 to a position indicated on theindex-head thereof as clearly shown in Fig. 22.

Head and .spindle mechanism.

The head 17 comprises a horizontal liarrcl having one of its ends turned towards the slidcway 4 4 and having its opposite end overlianf'ing the cavity 5 lreviously described. L pon the latter end ol3 said barrel there is formed the enlarged flange 80 to which ,is attached the extension 81, the

'latter having a hollow enlargement formed upon its rearward side adjacent to the flange 80 as shownV :it 82 iu Figs. 24 and 25.' Jourlialed in the barrel 17 is the'hrizontal holi low sleeve 83,`|iuvin" at its forward end-the enlarged collar 84 hy 'which Yits rearward movement isV prevented and having keyed to its exterior at the rear end a, pair of spurgears 85, H6, hy which any forward movement is prohibited. l i

Formed in the' wall'of the enlargement 82 parallel to thc sleeve H3 and at the .rear- .ward side thereof are a pair' of bearings 87 unil krt whileiu the hottoni of said enlargenient, pcrpeiulii-i'ihir to the hist named hearingg'sV and to thi-'sleeve l'l'thereis nimunted a third hearing Ril. .ournuled in said last lin-tiring is n vertical shaft '90 upon which is .wlidiihly splint-tl thc hert-l gear 91`wliich nies-hes with thihevel gear 54 heretofore mentioned, (scc Fig. Si). This shaft rises nud falls simultaneously with the head 17, the nur'hiue hust' heilig formed with It nhlv woll im for its reception.

Secured to thv'uppcr cuil of the slinft 9U is n lievi-.l guur 9'.' which mrshcs with il bevel suit- ISO table is effected by the screw 35 which may be moved by hand tlirou h the stud shaft 67 when the clutch 35 is isengaged or mechanically h the gear 35c when the clutch is engaged. e table cross feed is e'ected by manually turning the screw 26 "when the clutch 32 is disenga ed, or when said clutch is engaged it ma effected mechanically through the sha t 29,clutch 29 and gear 29". The longitudinal movement of the live spindle can be eli'ected manually' when the clutch spool 66 is disen ged by rotating the hand wheel 130 or han spokes 126; or upon meshing the sleeve 124 with the hub 123 and engaging the clutch 66, the same will be fed mechanically by way of the ars 653 and 66. The vertical movement o the head can be effected by turning the stud shaft 65 in case clutch 65 be disengaged, or during the engagement ofthat clutch it will he effected mechanicall i by way of the gears 64c and 65, Inter ocking features are provided whereb only one of these clutches can engages at onetime, this interlocking being effected by means of the grooved cylinder 76. A reversin device is provided at 64" so as to permit te operation of the feed in either direction relative to the movement of the spindle; a second reversin mechanism is provided at 58 arranged to in a positive manner in one direction at a s eed dependant upon the arrangement of t e gears 55-56s inclusive, during the cutting operation, or by friction a constant high speed for restoring the same to the, starting point; and means provided Vfor n tei-locking the two reversn mechanisms so that only one can Yhe shifte at a time and this onlvwhen in the lowerrspeed relation.

Finally the design and arran ment of the machine body provides for t e convenientand accessible location of the various gearing, the convenient connection oifl that gearing to the parts driven thereby, sind the provision of a machine of great strength and capable of high accuracy. It will be understood, however, that while I'have described in detailthe construction and modeof operation ofthis one machine I do not limit my self to the constructions and arrangements `herein shown except as the same are specilically recited in the 'claims lifereili annexed and made necessary by the prior state of the arl; inasmuch as. many changes can be made without departing from the scope of my inl vcntive idea.

llaving thus described my invention, what l claim is:- l. In a device of the character described :in elongated body having at oneV end a sliderive the parts column in line with said slidevray and overiianging said cavity, a rotatable spindle in said head, and gearing in said cavity operatively connected to said spindle and accessible through the top of said cavity.

2. In a device of the character described, an elon ated body having at one end a slidewuy an at the other cnil im upwardly' openingr cavity. an upright column located at one end ofsaid slidcway and adjacent to said cavity and ou't of line with both said slide- Way and said cavity, an operating head mov able vertically along said column in line with saidslideway and cavity, a rotatable spindle in said head. gearing in said cavity. and a vcrtically sliduhle shaft operatively connected 'to said spindle at its upper end und to said gearing'at its lower end.

3. In a device oi the character described. an elongated body having at one end a slide- Way and at the other end an upwardly open-i ing cavity. an upright column located between said slideway and cavity and out of line with both of them. an operating head carried by said column, a sleeve ]'oiirnalcd in said head. a s iindlc slidable in said sleeve. gearing in sait cavity. operative connections between vpart ot' uid gearing and said sleeic for rotating the saine, and operative connections bet-wcen another part of said gearing and said spindle for advancing .and retract-v ing the same.

4, 'In a device of the character described `an elongated body having at one end a slide- Wlly and at the other end un upwardly openlng cavity` :in upright column located hc- Sii Ron

tween said slideway and cavity, an operating head carried by said column, a sleeve journalcd in Said head` u spindle slidablc in said sleeve. selective speed-regulating gearing in said cavity. opcsutive connections bctwccn part of said gcaringund said sleeve for rotilting the same. levers carried by said body for selecting said gearing. operative connections between another part of said gearing and said spindle for advancing and retracting the suine` and other levers carried by said body independent of the `first levers for selecting the last named portions of said gearing.

."i. ln a device of the character described. a body having at one end a Slidcwav and at thc other end an upwardly opening cavity. un upright column carried by said body between said slideway and cavity, un operating head vertically movable upon said upright and overhanging said cavity. a toolcarrvng spindle journaled in said head. n vertical shaft extending from said cavity to the ovcrhuiiging portion of said head operative connections between said Shaft and said spindle inside said head,.and geariii;l in said cavity oiieratively connected to said shaft und accessible from the iop olA said cavity. 

